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小墨
2023-12-09 18:42:21 +08:00
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leetcode-cn/problem (English)/监控二叉树(English) [binary-tree-cameras].html
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@@ -3,7 +3,7 @@
<p>Return <em>the minimum number of cameras needed to monitor all nodes of the tree</em>.</p>
<p>&nbsp;</p>
<p><strong>Example 1:</strong></p>
<p><strong class="example">Example 1:</strong></p>
<img alt="" src="https://assets.leetcode.com/uploads/2018/12/29/bst_cameras_01.png" style="width: 138px; height: 163px;" />
<pre>
<strong>Input:</strong> root = [0,0,null,0,0]
@@ -11,7 +11,7 @@
<strong>Explanation:</strong> One camera is enough to monitor all nodes if placed as shown.
</pre>
<p><strong>Example 2:</strong></p>
<p><strong class="example">Example 2:</strong></p>
<img alt="" src="https://assets.leetcode.com/uploads/2018/12/29/bst_cameras_02.png" style="width: 139px; height: 312px;" />
<pre>
<strong>Input:</strong> root = [0,0,null,0,null,0,null,null,0]